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CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Cash flows from operating activities: |  |  |
Net income |  | $ 1,628 | $ 758
Adjustments to reconcile net income to cash provided by operating activities: |  |  |
Impairments and other charges |  | 184 | 723
Depreciation and amortization | [1] | 2,637 | 2,931
Stock-based compensation expense |  | 259 | 261
Pension and other postretirement benefits funding |  | (69) | (107)
Earnings of equity method investments, less dividends received |  | (41) | (52)
Change in assets and liabilities: |  |  |
Increase in receivables | [2] | (114) | (1,049)
(Increase) decrease in inventories | [2] | (68) | 14
Decrease (increase) in other current assets | [2] | 78 | (86)
(Increase) decrease in other assets | [2] | (167) | 202
Decrease in accounts payable and accrued liabilities | [2] | (1,011) | (533)
(Decrease) increase in estimated liability for taxes on income | [2] | (32) | 181
Decrease in other liabilities | [2] | (6) | (74)
Other | [2] | 104 | 243
NET CASH PROVIDED BY OPERATING ACTIVITIES |  | 3,382 | 3,412
Cash flows from investing activities: |  |  |
Capital expenditures |  | (1,539) | (1,482)
SPM investments |  | (719) | (492)
Multiclient seismic data costs capitalized |  | (63) | (223)
Business acquisitions and investments, net of cash acquired |  | (290) | (382)
Sale of investments, net |  | 1,922 | 3,310
Other |  | (36) | (92)
NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES |  | (725) | 639
Cash flows from financing activities: |  |  |
Dividends paid |  | (2,077) | (2,086)
Proceeds from employee stock purchase plan |  | 227 | 212
Proceeds from exercise of stock options |  | 29 | 49
Stock repurchase program |  | (300) | (868)
Proceeds from issuance of long-term debt |  | 220 | 681
Repayment of long-term debt |  | (900) | (2,206)
Net decrease in short-term borrowings |  | (103) | (1,110)
Other |  | (47) | 17
NET CASH USED IN FINANCING ACTIVITIES |  | (2,951) | (5,311)
Net decrease in cash before translation effect |  | (294) | (1,260)
Translation effect on cash |  | (12) | 21
Cash, beginning of period |  | 1,799 | 2,929
Cash, end of period |  | $ 1,493 | $ 1,690
[1] | Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.
[2] | Net of the effect of business acquisitions.

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